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Rb-Sr age of granitic rocks of southeastern massachusetts and the age of the lower cambrian at Hoppin Hill

โœ Scribed by H.W. Fairbairn; S. Moorbath; A.O. Ramo; W.H. Pinson Jr.; P.M. Hurley

Book ID
115852419
Publisher
Elsevier Science
Year
1967
Tongue
English
Weight
540 KB
Volume
2
Category
Article
ISSN
0012-821X

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Age and origin of the Nigerian mesozoic
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โœ O. Breemen; J. Hutchinson; P. Bowden ๐Ÿ“‚ Article ๐Ÿ“… 1975 ๐Ÿ› Springer ๐ŸŒ English โš– 978 KB

Sixty-four Rb-Sr and two K-At isotopic measurements from seven ring complexes in central Nigeria provide evidence for a systematic age trend along a 200 km zone ranging from 1744-5 m.y. in the north to 154-4-4 m.y. in the south. A peak of anorogenie magmatism occurred in the Jos Plateau region about